9 letter words:
zookeeper24,
6 letter words:
keeper12,
5 letter words:
kreep11,
pekoe11,
poker11,
proke11,
4 letter words:
zerk17,
prez15,
ooze13,
orzo13,
zero13,
keep10,
peek10,
peke10,
perk10,
poke10,
pook10,
pork10,
kero8,
kore8,
koro8,
reek8,
reke8,
roke8,
rook8,
epee6,
peer6,
pere6,
poor6,
pore6,
pree6,
proo6,
repo6,
roop6,
rope6,
3 letter words:
zek16,
poz14,
zep14,
rez12,
zee12,
zoo12,
kep9,
kop9,
eek7,
eke7,
erk7,
kor7,
oke7,
rok7,
oop5,
ope5,
pee5,
per5,
poo5,
pre5,
pro5,
rep5,
ere3,
oor3,
ore3,
ree3,
reo3,
roe3,
roo3,
2 letter words:
zo11,
ko6,
op4,
pe4,
po4,
ee2,
er2,
oe2,
oo2,
or2,
re2,